The **SES-2AD-R/E** is a specific model of an electronic emergency exit hardware component, typically associated with electromagnetic locks or specialized door release systems. This specific part is often identified as a **Double Pole Double Throw (DPDT) Push-to-Exit Button** or a **Key Switch**, designed for high-security environments. ### 1. Key Technical Specifications Below are the primary electronic and mechanical characteristics of the SES-2AD-R/E: | Feature | Specification | | :--- | :--- | | **Switch Type** | Double Pole Double Throw (DPDT) | | **Contact Rating** | 4A @ 28VDC (standard) | | **Material** | Stainless Steel Plate / Aluminum housing | | **Mounting** | Narrow Stile (often used for aluminum door frames) | | **Termination** | Color-coded wire leads or screw terminals | | **Operational Mode** | Maintained or Momentary (model dependent) | --- ### 2. Core Electronic Components The functionality of the SES-2AD-R/E is driven by three main internal components: #### A. The DPDT Switch Block This is the heart of the device. Being **Double Pole Double Throw** means it can control two separate circuits simultaneously. * **Circuit 1:** Usually handles the power to the electromagnetic lock (dropping power to release the door). * **Circuit 2:** Often used for signaling a monitoring system, such as a Fire Alarm Control Panel (FACP) or an Access Control System (ACS), to log that the exit was used. #### B. The Actuator Depending on the specific sub-variant: * **Key Cylinder:** Uses a physical key to toggle the state. * **Push Button:** A mechanical spring-loaded button that resets after use. #### C. Wiring Harness The "R/E" designation often refers to the inclusion of specific resistors or color-coded wiring designed to meet **UL 294** (Access Control System Units) standards. It ensures the device can be integrated into supervised loops where the system detects if the wire has been cut or shorted. --- ### 3. Typical Application Schematic In a standard security setup, the SES-2AD-R/E is wired as follows: ```mermaid graph LR Power[12/24V Power Supply] --> Switch[SES-2AD-R/E] Switch --> MagLock[Electromagnetic Lock] Switch --> Controller[Access Control Panel] ``` ### 4. Summary of Use Cases 1. **Emergency Overrides:** Used as a manual backup to release magnetic locks if the electronic reader fails. 2. **Interlock Systems:** Managing "Mantrap" sequences where one door must be locked for the other to open. 3. **Audit Trailing:** Providing a dry contact signal to a security computer to record timestamps of manual exits. ---